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A075441
a(n) is the number of solutions to the n-term Znam problem.
Three results are missing for a(7) in Eric Weisstein's World of Mathematics: [2, 3, 7, 43, 3263, 4051, 2558951] [2, 3, 11, 25, 29, 1097, 2753] [2, 3, 13, 25, 29, 67, 2981]. - Du, Zhao Hui, Jan 24 2010